Home / 1,916.30-2,644.49-1,170.11

Finding the Fourth Proportional to 1,916.30, 2,644.49 and 1,170.11

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Solution

The fourth proportional to 1,916.30, 2,644.49 and 1,170.11 is: 1,614.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.30 : 2,644.49 = 1,170.11 : x
  2. Step 2: Convert to fraction form
    1,916.30/2,644.49 = 1,170.11/x
  3. Step 3: Cross multiply
    1,916.30x = 2,644.49 × 1,170.11
  4. Step 4: Simplify right side
    1,916.30x = 3,094,338.34
  5. Step 5: Solve for x
    x = 3,094,338.34/1,916.30
  6. Step 6: Final answer
    x = 1,614.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.